On Mon, Apr 03, 2017 at 11:57:55AM -0700, Laura Abbott wrote:
> When CMA was first introduced, its primary use was for DMA allocation
> and the only way to get CMA memory was to call dma_alloc_coherent. This
> put Ion in an awkward position since there was no device structure
> readily available
On 04/10/2017 11:47 PM, Laurent Pinchart wrote:
> Hi Laura,
>
> Thank you for the patch.
>
> On Monday 03 Apr 2017 11:57:55 Laura Abbott wrote:
>> When CMA was first introduced, its primary use was for DMA allocation
>> and the only way to get CMA memory was to call dma_alloc_coherent. This
>>
Hi Laura,
Thank you for the patch.
On Monday 03 Apr 2017 11:57:55 Laura Abbott wrote:
> When CMA was first introduced, its primary use was for DMA allocation
> and the only way to get CMA memory was to call dma_alloc_coherent. This
> put Ion in an awkward position since there was no device
When CMA was first introduced, its primary use was for DMA allocation
and the only way to get CMA memory was to call dma_alloc_coherent. This
put Ion in an awkward position since there was no device structure
readily available and setting one up messed up the coherency model.
These days, CMA can
